Steam pumping-engine.



No. 666,374. Patented Jan. 122, l90l.

H. BREITENSTEIN. STEAM PUMPING ENGINE.

[Application filed Feb. 10, 1900.)

("0 Model.)

Q 3 PG Q f Witnesses. Invn for TNE nomqs rrrzns cc PNOTMITNOH wAsHmuToN.o, c

themes Sramns Parent HENRY BREITENSTEIN, OF LARAMIE, WVYOMING.

STEAM PUMPiNG-ENGlNE.

SPECIFICATION forming part of Letters Patent No. 666,374, dated January22, 1901.

Application filed February 10. 1900- Serial No. 4,787. (No model.)

To all whom it may concern:

Be it known that I, HENRY BREITENSTEIN, a citizen of the United States,residing at Laramie,in the county ofAlbany and State of Wyoming, haveinvented certain new and useful Improvements in Steam Pumping-Engines,of which the following is a specification, reference being had thereinto the accompanying, drawings.

This invention relates to improvements in pumping engines, especiallysuch as are known as duplex pumping-engines.

The object of the invention is to produce an improved construction andcombination of parts and to simplify engines of this well-- knowncharacter.

Figure 1 is a vertical central section through two steam-cylinders andvalve-chests. Fig. 2 is a reverse view of one of the cylinders modifiedas to construction.

The numeral 1 indicates one steam-cylinder of the engine, and 3indicates the other steamcylinder. The steam-piston 11 in cylinder 1 isconnected to the pump in usual manner by piston-rod 12, and piston 31 isconnected to its pump by piston-rod 32. The steam valve-chest 14,connected to cylinder 1, contains the slide-valve 33, which governs theports of cylinder 3, and the steam-chest 34, connected to cylinder 3,contains the slidevalve 13, which controls the steam-ports ofcylinder 1. The slide-valves are connected to tappet-rods 15 and 35,each projecting through the head of the adjacent cylinder and passingthrough suitable packing boxes or bushings in said cylinder-heads. Thepistons 16 16, fixed on tappet-rod 15, and the corresponding pistons ontappet-rod 35 prevent the passage of steam, which may enter between saidsteam-chest pistons, to the end of said steam-chests. These pistons 1616 and 36 36 are of equal size and operate as moving pistons in thesteam valve-chests. Except as the pressure is removed from one side orthe other, as indicated, the valve-operating pistons are balanced byreason of their equal area; but as the pistons in the valve-chests aremuch smaller than the pis.

tons in the steam-cylinders the operation of the valves by the mainpistons through the tappet-rods will be efiected whether the pistons inthe valve-chests be balanced or not.

Steam will be introduced to each of the steam-chests by suitable portsor passages, which may be indicated at a (0.

Now assuming the parts to be in the position shown in Fig. 1 and thatsteam be admitted at a,'by passage 36 this steam will enter under piston11 and raise the same. As pistons 36 are of equal size, there will be notendency to move valve 13, except as herein stated. The entrance ofsteam by passage 36 will lift the piston 11. Any air or steam abovepiston 11 is free to escape by passage 21, and so to exhaust 22, suchpassages being opened by the then position of valve 13. When piston 11rises so far as to strike tappet 15, it thereby moves said tappet, thepistons 16, and slide-valve 33 in such manner as to close port 23 to theexhaust 24 and at the same time open passage 25 to the cylinder 3, sothat steam from chest 14 may enter said cylinder, the valve 33 havingthen assumed a position corresponding to that of valve 13. The steamthrough passage 25 thus enters above piston 31 and drives said pistondownward, exhaust-passages 23 24 being open for the escape of air orsteam from below said piston 31. l/Vhen piston 31 nearly reaches the endof its downward stroke, the by-passage 28 is opened to the entrance ofsteam from above said piston. The passage or pipe 28 leads into thesteam-chest 34 above the upper piston 36, and as there is now nothing toprevent, the pistons 36, slide-valve 13, and tappet 35 are moveddownward by the pressure of steam through such passage 28. Such movementof valve 13 reverses the steam to cylinder 1 by opening the passage 21,leading above the piston 11, and opening the passage 36 22, which nowbecomes the exhaust. l/Vhen piston 11 has about completed its downwardstroke, it uncovers passage 29, and steam then enters said passage andforces down the pistons 16, slide-valve 33, and tappet-rod 15, whichagain opens the steam-passages to lift the piston in the cylinder 3, asbefore. As will be seen, the down position of slide 33 permits theexhaust of steam from above piston 36 by the passages 28, 25, and 24, sothat there will be no resistance to the lifting of the tappet at thenext rise of the piston 31, and such action is reciprocal in the twocylinders.

A by-passage 40 is provided for any steam which may leak around thetappet-rod, so that such a steam-leak may not affect the Working of thevalves, but such steam Will act as a cushion to prevent pounding by theslides.

I am aware that the general sequence of piston movements is common inpumps of this character. Such is generally effected by in oving thevalves by slides or gearing, so that a more complex structure isrequired.

Fig. 2 indicates a modification in which the tappet and slide may beapplied to a singleacting engine, the cylinder 4 having steampassage 46from the steam-chest to the lower side of piston 41 and by-passage 28.In other respects the construction may be in general as indicated forthe duplex engine.

What I claim is 1. In a duplex pumping-engine, the combination of twosteam-cylinders provided with pistons as usual, a steam-chest at the endof each cylinder having ports leading to opposite ends of the moreremote cylinder and a tappet-rod extending into the adjacent cylinder,pistons on said tappet-rods, and a icy-passage extending from near theremote end of each cylinder to the remote end of its own steamcl1est,a1lcom bined substantially as described.

2. In a duplex pumping-engine, the steamcylinders, pistons andsteam-chests arranged as described, the tappet-rods having pistonswithin the steam-chests arranged to be actuated by steam in the chests,each tappet-rod connected to the slide-valve controlling the passages tothe remote cylinder, the tappetrods extending into the steam-cylindersas described and steam-passages by which the steam enters from onecylinder to operate the slide-valve controlling the other cylinder, allcombined substantially as described.

3. In a duplex pumping-engine, the cylinders, steam-chests, and pistonsarranged as described, tappet-rods extending into the cylinders,slide-valves in the steam-chests connected to said tappet-rods, andhaving operating-pistons connected thereto and working in thesteam-chests and a leak-exhaust connected to the slide-valve chamber torelieve the valve below the tappet-rod, all combined substantially asdescribed.

In testimony whereof I aflix my signature in presence of two Witnesses.

HENRY BREITENSTEIN.

Witnesses:

DWIGHT P. SMITH, HOWARD R. INGHAM.

